Validation of sea ice concentration
Bulletin date: 2020-04-23
Model vs. observations, sea ice class contingency tables
Date: 2020-04-17:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11564 |
6098 |
1820 |
716 |
345 |
169 |
57 |
0 |
| OW |
0 |
0 |
130 |
126 |
147 |
104 |
63 |
0 |
| VODI |
0 |
0 |
55 |
123 |
221 |
229 |
160 |
0 |
| ODI |
0 |
0 |
7 |
72 |
148 |
193 |
314 |
4 |
| CDI |
0 |
0 |
1 |
51 |
92 |
237 |
918 |
36 |
| VCDI |
0 |
0 |
0 |
28 |
76 |
277 |
8824 |
4754 |
|
...date precedes bulletin
|
Date: 2020-04-21:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11656 |
6395 |
1406 |
676 |
358 |
258 |
45 |
0 |
| OW |
0 |
2 |
181 |
178 |
173 |
158 |
72 |
0 |
| VODI |
0 |
0 |
83 |
195 |
212 |
264 |
217 |
0 |
| ODI |
0 |
0 |
26 |
119 |
200 |
239 |
503 |
10 |
| CDI |
0 |
0 |
2 |
72 |
139 |
299 |
1406 |
10 |
| VCDI |
0 |
0 |
0 |
45 |
52 |
165 |
7754 |
4589 |
|
...date precedes bulletin
|
Date: 2020-04-23:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11909 |
6198 |
942 |
1088 |
448 |
162 |
33 |
0 |
| OW |
0 |
20 |
166 |
257 |
197 |
105 |
85 |
0 |
| VODI |
0 |
5 |
48 |
217 |
214 |
203 |
226 |
0 |
| ODI |
0 |
7 |
3 |
162 |
139 |
222 |
432 |
1 |
| CDI |
0 |
0 |
0 |
96 |
177 |
343 |
1395 |
6 |
| VCDI |
0 |
0 |
0 |
94 |
128 |
324 |
7490 |
4617 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11908 |
6199 |
973 |
1099 |
463 |
162 |
57 |
0 |
| OW |
1 |
18 |
122 |
227 |
184 |
104 |
71 |
0 |
| VODI |
0 |
5 |
57 |
221 |
200 |
192 |
194 |
0 |
| ODI |
0 |
8 |
7 |
166 |
143 |
222 |
439 |
0 |
| CDI |
0 |
0 |
0 |
105 |
181 |
364 |
1322 |
3 |
| VCDI |
0 |
0 |
0 |
96 |
132 |
315 |
7578 |
4621 |
|
Date: 2020-04-27:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11531 |
6384 |
810 |
1292 |
655 |
149 |
30 |
0 |
| OW |
8 |
27 |
123 |
262 |
200 |
129 |
72 |
30 |
| VODI |
3 |
8 |
79 |
242 |
222 |
223 |
127 |
142 |
| ODI |
0 |
5 |
14 |
99 |
231 |
421 |
304 |
179 |
| CDI |
0 |
0 |
9 |
60 |
154 |
858 |
852 |
214 |
| VCDI |
0 |
0 |
22 |
62 |
103 |
796 |
6296 |
4732 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11522 |
6377 |
852 |
1353 |
762 |
273 |
72 |
0 |
| OW |
17 |
32 |
62 |
196 |
135 |
123 |
62 |
44 |
| VODI |
1 |
7 |
42 |
186 |
149 |
214 |
155 |
144 |
| ODI |
2 |
8 |
35 |
100 |
141 |
252 |
295 |
203 |
| CDI |
0 |
0 |
29 |
72 |
220 |
838 |
675 |
179 |
| VCDI |
0 |
0 |
37 |
110 |
158 |
876 |
6422 |
4727 |
|
Date: 2020-04-29:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11561 |
5976 |
1234 |
1046 |
909 |
335 |
53 |
0 |
| OW |
2 |
9 |
78 |
227 |
220 |
251 |
59 |
0 |
| VODI |
3 |
10 |
30 |
186 |
173 |
348 |
203 |
0 |
| ODI |
0 |
2 |
4 |
109 |
148 |
503 |
493 |
9 |
| CDI |
0 |
0 |
0 |
48 |
130 |
781 |
1321 |
23 |
| VCDI |
0 |
0 |
0 |
56 |
45 |
585 |
6693 |
4296 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11556 |
5975 |
1285 |
1123 |
985 |
443 |
76 |
0 |
| OW |
7 |
9 |
46 |
135 |
132 |
175 |
87 |
0 |
| VODI |
3 |
5 |
10 |
112 |
137 |
302 |
225 |
0 |
| ODI |
0 |
8 |
4 |
107 |
129 |
332 |
475 |
10 |
| CDI |
0 |
0 |
1 |
105 |
165 |
839 |
1106 |
20 |
| VCDI |
0 |
0 |
0 |
90 |
77 |
712 |
6853 |
4298 |
|
Date: 2020-05-01:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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